On "Catholicity" and "Unity"

Doug Wilson has posted some lucid thoughts about what "Christian unity" is and is not, much of which at once mirror my own thoughts in Evangelical Answers, and contradict the thoughts of others who view Wilson a mentor of sorts. I should point out here that while I heartily agree with Wilson's cogent thoughts on unity, faithful pastors and false teachers (which are very well stated), I do not thereby concur with his thoughts (found further down in the article) on "baptismal succession" or postmillennialism.